RD tech

22/12/2025

A customer asks me how to charge a battery pack, we can only set a total voltage and current to charge them as a whole

A battery pack is comprised of many single battery cells, When the state of individual cells changes, the battery pack becomes unbalanced. An unbalanced battery cannot be fully charged or completely discharged, and this imbalance accelerates battery aging,This not only reduces battery performance but also shortens the overall lifespan of the battery.

To solve this problem, you should add a cell balance board, you can search it to keep each battery same voltage

https://www.aliexpress.com/item/1005006881009078.html

17/12/2025

hello, if you set 60V on RD6030, output shows 60V too, but you use multimeter to check, it is 59.5V(out of allowed error range), then please check if you measure the voltage on the load, there are cables, especially when you use high current, voltage drop is higher
https://www.aliexpress.com/item/1005006881009078.html

15/12/2025

hello, here are some output current questions about RD power supply
1.what is the max output current? check the name, like RD6030, it is 60V 30A max, lower down output voltage will not make max output current higher
2.I cannot get the setting current:A: check if input power is enough B.under CV mode, current=setting voltage/load resistance
www.aliexpress.com/store/923042

13/12/2025

hello, in this video we get a RD6018 damaged by overhigh input voltage, we find the 80V 470uf capacitors damaged, and check the input voltage protection board, it is damaged too, after replacing them, it can work at low input voltage, when raise the input voltage, an extra capacitor is burned, other chips are all good, replace it and check it under different input voltage and take load, it is ok finally

hello, in this video we get a RD6018 damaged by overhigh input voltage, we find the 80V 470uf capacitors damaged, and check the input voltage protection boar...

12/12/2025

Hello, a customer contacts us and sends us a picture, he asks when we have such a RD6024,after checking this picture, we find it is not our product, although it has our logo and product name, it is not our design, and I do not find it when I search this picture, maybe AI picture?

10/12/2025

hello, I find that some customers use our DPS(H) series power supply after so many years, the front protection film is worn out, you can contact us for a new one to replace, normally you just pay the shipping fee, or if you order anything else, we can send them together, no need other fee
https://www.aliexpress.com/item/1005008549262222.html

09/12/2025

hello, this is a video to show you how to charge a battery:
1. use green black terminal to connect battery, when connect right, the icon turns red
2. set output voltage and current according to battery type and capacity
3. turn on output, it use CC-CV mode to charge the battery
https://www.aliexpress.com/item/1005004766086330.html

08/12/2025

Hello everyone, Gift season on Aliexpress will start from December 8th to 14th, you can get the products with lower price compared with normal time, you can visit the promotion page in this link: https://www.aliexpress.com/store/923042/pages/promotion-202512061214.html, if you are not familiar with our products here is the introduction:
If you need a power supply which is easy to use, RD series will be a good choice because they are user friendly and have bigger screen,you can see more details in the product page.
RD6030(normal from 108USD): https://www.aliexpress.com/item/3256806694694326.html
Russia RD6030 link: https://vi.aliexpress.com/item/1005008298787924.html
RD6018P: https://www.aliexpress.com/item/1005009662649484.html
RD6024(normal from 98USD): https://www.aliexpress.com/item/1005003744641750.html
RD6012P(normal from 103USD): https://www.aliexpress.com/item/1005003472332331.html
RD6006(normal from 61.5USD): https://www.aliexpress.com/item/4000282551930.html
RD6012(normal from 70.5USD): https://www.aliexpress.com/item/4001053200176.html
And there is assembled set link, you can get the assembled set in this link:
https://rdtech.aliexpress.com/store/1100599049/pages/all-items.html?shop_sortType=bestmatch_sort&productGroupId=40000002593531&SearchText=&shop_filterType=
If you need the accessory for RD power supply, you can get them in the link below:
X15A/X25A cable: https://www.aliexpress.com/item/3256803549639569.html
X36A cable: https://www.aliexpress.com/item/3256806765571799.html
Silicone sleeve: https://www.aliexpress.com/item/3256807544144602.html
If you don’t care about the operation and the screen, you can choose our RK and DPS series(buck mode) and DPH series(buck boost mode).
RK6006(normal from 36USD: https://www.aliexpress.us/item/3256805243272337.html
DPS5020(normal from 44.99USD): https://www.aliexpress.com/item/32821185351.html
DPS5015(normal from 38.94USD): https://www.aliexpress.com/item/32702714880.html

05/12/2025

hello, for silicone sleeve SLE-D1, it is designed for S400/S800 case, if you have our early case S06A/S12A case, the size is ok, but you need to add some glue to fix them, because the screw fixing hole position changes https://www.aliexpress.com/item/1005007730459354.html

04/12/2025

hello, some customers use battery pack as input power for our RD power supplies, so they ask if RD power supply has under voltage protection for input, so that it can protect the battery from losing too much power, sorry for this we do not have such function, as long as input voltage reachs start voltage, our power supply will light and work
https://www.aliexpress.com/item/1005006881009078.html